<form>
<input name=DDatePeriod1 id=DDatePeriod1 size=10 ><a onclick="event.cancelBubble=true;" 
	href="javascript:showCalendar('imageCalendar1',false,'DDatePeriod1',null);"><img id="imageCalendar1" 
	width=34 height=21 src="button.gif" border="0" align="absmiddle"></a>
</form>
<script language=javascript src=calendar.js></script>